Hi Mulyadi, > > I was trying to probe shrink_list in mm/vmscan.c > > > > When my pre_handler is called, the esp doesn't point to the correct stack > > frame. I put pre_handler for shrink_list itself. So ideally when call to > > this point will hit, esp should already be pointing to the return_address > > location in stack but its not so. Am I missing something? > > > > Thanks > > Interesting question, makes me do a bit research by reading the > documentation. > > If you check kprobes.txt in Documentation folder of kernel source > tree, in section 1.3.1 you'll read: > > "While the probed function is executing, its return address is > stored in an object of type kretprobe_instance." > > I guess, you should check the return address in that object.
Thanks for pointing this out. I went through this document earlier, in fact thats how I found about kprobes. I wanted to know how shrink_list and cousins are behaving without having to recompile the kernel again and again. But in rush to probe them I might have overlooked things. I have go through it once again. Regards Himanshu -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecar...@nl.linux.org Please read the FAQ at http://kernelnewbies.org/FAQ
